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Rectal Swab Carbapenemase Surveillance PCR
Test CodeCRPCR
Alias/See Also
Epic: LAB14554
Includes
Real-time polymerase chain reaction (PCR) for the qualitative detection and differentiation of the blaKPC, blaNDM, blaVIM, blaOXA-48, and blaIMP gene sequences associated with carbapenem-non-susceptibility in gram negative bacteria.
Preferred Specimen
Specimen Type: Swab
Source: Rectal, perirectal
Collection Container: Culture transport swab (dual swab, LQ Stuart, plastic applicators, rayon tipped; Cepheid catalog number 900-0370).
Specimen Volume: Swab
Instructions
Collection Instructions:
- Rectal collection: Carefully insert both swab tips approximately 1 cm beyond the anal sphincter and rotate gently
- OR -
Perirectal collection: Carefully inser both swab tips no more than 1 cm into the anal opening before the anal sphincter and rotate gently. - Heavily soiled swabs are unaccpetable. See acceptable swabs below.
- Label swab with patient information.
- Transport o the laboratory at room temperature.
- The following are examples of acceptable specimens:
Specimen Stability
Room temperature: 5 days
Refrigerated: Unacceptable
Frozen: Unaccptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Highly soiled swab specimens:
Setup Schedule
Daily
Report Available
1 day
Reference Range
Not detected
Clinical Significance
This test utilizes real-time PCR for the detection and differentiation of gene sequences associated with carbapenem-non-susceptibility in Enterobacteriaceae, Pseudomonas aeruginosa and Acinetobacter baumannii. Targets include blaKPC, blaNDM, blaVIM, blaOXA-48 (and blaOXA-181), and blaIMP (excluding IMP-7, IMP-13, IMP-14). Detection of these gene sequences does not indicate the presence of viable organisms. This assay does not report variants of these gene sequences. Mutations or polymorphisms may affect detection of current, new, or unknown variants, resulting in a false negative result. This test is for Infection control surveillance purposes only and should not be used to make treatment decisions. The performance of the Xpert Carba-R Assay has not been evaluated with rectal swab specimens from pediatric patients.
Performing Laboratory
Inova Laboratories
2832 Juniper Street
Fairfax, VA 22031
Last Updated: July 19, 2023
Last Review: N. Wolford, April 10, 2023